Religion is certainly necessary for some people... for some humans they just need something to believe in or they lose their minds. The phrase "Opium of the people" comes to mind, though religion is certainly not necessary for everyone. If you need something to believe in to help you get through life, then great and you do you, but not everyone needs this. I believe in freedom of religion but religious people certainly shouldn't be preaching or judging others and certainly not forcing their beliefs on people or killing others in the name of it.